38 lines
1.1 KiB
Swift
38 lines
1.1 KiB
Swift
import Foundation
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/// 网络错误。
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public enum NetworkError: Error, Sendable {
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case invalidResponse
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case http(statusCode: Int)
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case decoding(String)
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}
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/// 通用 HTTP 客户端（对应 Android Retrofit 的最小抽象）。
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public protocol APIClient: Sendable {
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func get<T: Decodable & Sendable>(_ url: URL) async throws -> T
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}
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/// 基于 URLSession 的 APIClient 实现。
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public struct URLSessionAPIClient: APIClient {
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private let session: URLSession
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public init(session: URLSession = .shared) {
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self.session = session
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}
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public func get<T: Decodable & Sendable>(_ url: URL) async throws -> T {
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let (data, response) = try await session.data(from: url)
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guard let http = response as? HTTPURLResponse else {
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throw NetworkError.invalidResponse
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}
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guard (200..<300).contains(http.statusCode) else {
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throw NetworkError.http(statusCode: http.statusCode)
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}
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do {
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return try JSONDecoder().decode(T.self, from: data)
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} catch {
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throw NetworkError.decoding(error.localizedDescription)
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}
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}
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}
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